How do I return my rental car to the SeaTac Rental Car Facility via local highways?

Detailed answer

To return your rental car to the SeaTac Rental Car Facility, you have three options via local highways. First, you can take I-5 South via Exit 154B. From I-5 South, take the exit for International Boulevard/Des Moines Memorial Drive, and then follow the signs to the Rental Car Facility, located at 18200 International Boulevard, SeaTac, WA 98188. Alternatively, if you're coming from the north, take I-5 North and exit at 154A towards Des Moines Memorial Drive/International Boulevard. Follow the signs to the Rental Car Facility. Another option is to take SR 509/SR 518, which will also lead you to the facility. The Rental Car Facility is open 24/7, and the return process typically takes around 10-15 minutes. Be aware that there is a $6.50 daily rental car tax fee per vehicle. The facility is approximately 1.5 miles from the Seattle-Tacoma International Airport main terminal, and the drive typically takes around 5-10 minutes depending on traffic.